with import ; { pkgs, ... }: let enable = versionOlderThan "19.03"; versionOlderThan = v: compareVersions (versions.majorMinor version) (versions.majorMinor v) == -1; warning = '' Using custom services.nscd.config because https://github.com/NixOS/nixpkgs/pull/50316 ''; in optionalAttrs enable (trace warning { services.nscd.enable = mkForce true; services.nscd.config = mkForce (readFile (pkgs.fetchurl { url = https://raw.githubusercontent.com/arianvp/nixpkgs/1d5f4cb/nixos/modules/services/system/nscd.conf; sha256 = "1jlddk38lyynjn51zx3xi1nc29ahajyh0qg48qbq6dqlsrn3wxqs"; })); })